It’s not Ice Cream Sandwich, but a big update is hitting the Sony Ericsson Xperia Play and Xperia Arc next week in the UK, we’ve confirmed. The over the air Android 2.3.3 update will bring the Facebook inside Xperia service to the phones, which we also understand will hit the Xperia X10 with the upcoming Android 2.3 update, and come preloaded on the Xperia Mini and Xperia Mini Pro, as well as all new Android Sony Ericsson phones going forward.

The service was unveiled earlier this month, promising to bring tighter integration between Sony Ericsson’s music player and gallery apps on its Android phones. You can like and share tracks and photos, and Facebook photos of you are cached automatically on your phone, appearing as a folder within the gallery.

We were demoed the service today and while it won’t be of interest to every Android owner (if you’re a business rather than entertainment smartphone user, for instance), you can turn it and the individual features off in the settings.

The over the air update will roll out from next week on unlocked phones, while Sony Ericsson phones on contracts will receive the update when individual networks give the greenlight.